Ash-dumping mechanism.



P. L. CROWE.

ASH DUMPING MECHANISM.

APPLICATION FILED MAY 15 I913.

Patented May 8, 1917.

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ASH DUMPING MECHANISM.

APPLICATION FILED MAY 15, 1913.

% abhor/1421 PAUL L. caown, or New YORK, n. Y.

ASH-DUMPING MECHANISM.

Specification of Letters Patent.

Patented May 8, 1917.

Application filed May 15, 1913. Serial No. 767,906.

To all whom it may concern:

Be it known that I, PAUL L. Grown, a citizen of the United States, residing at New York, in the county of New York andState of New York, have invented certain new and useful Improvements in Ash-Dumping Mechanism, of which the following is a specification, reference being had therein'to the accompanying drawing.

This invention relates to furnaces and has for its object theproduction of an efficient means for dumping ashes from the fire chamber into the ash pit.

Another object of this invention is the production of an eflicient means for causing the ashes to. ride over upon the dumping gate so as to be easily discharged therefrom and thrown into the ash pit.

Further objects and advantages of the present structure will be apparent throughout the following specification and claims, and it should be understood that the invention may be modified in its detailmechanism without departing from the spirit of the invention.

In the accompanying drawings Figure 1 is a central longitudinal section through the furnace.

Fig. 2 is a horizontal sectional View through the furnace.

Fig. 3 is a front view of a portion ofthe furnace showing the operating lever for actuating the dumping gate.

Fig. 41 is an end view of one side of the furnace showing the manner of supporting the longitudinally extending channel irons.

Fig. 5 is a top plan view of a seriesof the guiding, cleats for directing the ashes over from the grate upon the dumping gate.

Fig. 6 isa detail perspective of one of the eye-bolts for connecting the gate operating bars to the operating levers.

Fig; 7 is a detail perspective of one of the grate operating levers.

Fig. 8 is a detail perspective of a portion of the operating rod for the grate operating levers.

Fig. 9 is a detail perspective of the looking bracket which is adapted to hold the operating handle of the operating rod when thrown to a set position.

Fig. 10 is a plan view of the bottom face of the dumping gate used in connection with the present invention.

Fig. 11 is a detail perspective view of the inclined plate carried atthe rear end of the furnace.

Fig. 12 is a detail perspective of one of the bridge bars or cleats adapted to overhang the inclined plate illustrated in Fig. 11.

Fig. 13 is a detail perspective of a modified form of the bridge bar or cleat.

Fig. 14 is a longitudinal section of the bridge bar or cleat illustrated in Fig. 13.

By referring to the drawings it will be seen that 1 designates the body of the furnace which is provided with the usual chain grate not shown and indicated in dotted lines by the numeral 2, and the sides of the furnace 1 are provided with "ertically extend.- ing channel irons 3, which channel irons support the upper and lower longitudinally extending channel irons 1 and 5, these channel irons extending upon opposite sides of the furnace as illustrated in Fig. 2.

A gate supporting frame 6 is placed near the rear end of the furnace and a pintle member 7 is supported upon this frame 6 and upon this pintle member 7 are placed the eyes 8 of the dumping gate 9. This dumping gate 9 is mounted so as to freely swing upon the pintle member 7 and to allow the ashes to be dumped down-into the ash pit 10 as illustrated in Fig. 1.

An inclined plate 11 is supported between the inner ends of the upper longitudinally extending channel bars 1 and is so position as to direct the ashes from the chain grate to the dumping gateO. This plate 11 is formed of soft metal such as iron and is reinforced by means of a hardened steel plate 12 which plate 12 is securely fastened to the under face of the plate 11 by means of rivets13. A pair oflongitudinally extending rib portions 14: are placed upon the outer face of the plate 11 and are adapted to retard the downward sliding movement of the ashes as the same are delivered from the end of the chain grate.

Thisv plate 11 is provided with a laterally projecting flange portion 15 and from this flange portion 15 project the rear ends 16 of the closely arranged bridge-bars 17. These bridge-bars 17 are provided at their rear extremities with downwardly projecting lips 18 as illustrated clearly in Fig. 1 for anchoring the same upon the plate 11 The forward ends of the bridge-bars 17- are bent downwardly to produce a widened gradually curved face so as to allow the bolts 27.

burnt coals or ashes to be readily forced up upon the cleats 17 and gradually be de posited upon the dumping gate 9. These bridge-bars 17 are provided with interlocking lugs 19 upon each side thereof for interlocking with the sockets 20 formed in the adjacent bridge-bar. These sockets and lugs are placed in staggered relation to each other so as to cause the lug of one bridgebar to fit in the socket of the adjacent bridge-bar and thereby constitute a substantially continuous body. It should be understood that in case ne of the bridge-bars should become worn or injured the same may be readily replaced by a new bridge-bar without the necessity of removing the entire number. These bridge-bars are firmly wedged in between the sides of the furnace so as to prevent the bridge-bars from being disassembled as the grate is in operation.

The dumping gate 9 is provided with a pair of depending web portions 21 which web portions are connected to the T-shaped operating bars 22. These dumping rods 22 are so formed as to pass under the grate without interfering with the mechanism and are provided with upwardly inclined forward ends 23 which forward ends engage the adjusting bolts 24:, which bolts are securely fastened thereto. The adjusting bolts 21 have their threaded ends fitting through apertures 25 of the heads 26 of the eye- The threaded portions 28 of the eye-bolts are passed through the apertures 29 of the operating levers 30, and the nuts 31 firmly hold the eye-bolts 27 in engagement with the enlarged portion 32 of the operating levers 30.

As illustrated in Fig. 2, two of these operating bars 22 are employed for the pur pose of efficiently operating the gate 9.

An operating rod 33 is journaled upon the front of the furnace and through this operating rod 33 are secured the operating levers by having the notch portions 34 fitting over the squared portions 35 of the operating rod 33. These notch portions 3 f of the levers 30 are firmly held upon the squared portions 35 of the operating rod 33 by means of a. binding bolt 36 as is clearly illustrated in Fig. 7. It will, therefore, be seen that as the operating rod 33 is rotated the levers 30 will be swung so as to open and close the gate 9 as above described.

An operating handle 37 is formed upon the rod 33. and extends at an angle thereto and by swinging the handle 37 the gate 9 may be swung to an open position in view of the fact that the inner ends of the levers 30 will be swung downwardly thereby drawing the operating bars 22 longitudinally. By returning the operating lever or handle 37 to the position shown in Fig. 1 the gate 9 may be again thrown to its normal or closed position.

For the purpose of holding the handle 37 in a set position a bracket 33 is provided having a base portion 39 secured to the wall of a furnace. The bracket 38 is provided with a bifurcated outer end i0 having spaced ears ll which are provided with apertin'es 42 at their outer ends for the purpose of receiving the locking pin 43. When the locking pin is in position the arm 37 will be held against operation and cannot he accidentally thrown so as to accidentally open the gate 9.

As illustrated in Fig. 2 the gate 9 has its rolled portions 8 extending beyond the edge thereof so as to hold the ends of the gate 9 in spaced relation relative to the side walls of the furnace.

The furnace is provided with the usual transversely extending shafts 4% which shafts support the chain engaging pulleys 45. These pulleys 45 as illustrated in 2 are provided upon each side with laterally extending bearing portions 46 which furnish a broad bearing for the pulleys, and the outer bearing portion 46 of each pulley is positioned so as to extend to one side of the chain grate and allow the chains to be brought up close to the side of the furnace and yet provide a wide bearing face for the pulleys.

By carefully considering Fig. 1 and also Fig. 3 it will be seen that a vertically extending angle iron 59 is carried upon the front of the stoker and upon each side thereof. End plates 60 are secured to the inner faces of these angle irons 59 as illustrated in Fig. 1 and extend at right angles to the front of the stoker or furnace.

A. hopper plate 61 is .carried between the two end plates 60 and is pitched or inclined so as to have the lower end of the hopper plate 61 inclined toward the front of the stoker or furnace. The lower end of the hopper plate ()1 rests upon a hopper plate rest 62. The upper end of the hopper plate 61 is engaged by means of a longitudinally extending angle iron 63, which angle iron is secured at its respective ends to the end plates .60, near the upper edges thereof.

The frame 6 is provided with an overhanging flange 6 for limiting the upward movement of the gate 9 and cimstituting an air tight seal therefor.

The inclined plate 11 has its lower end 47 thickened as clearly illustrated in Fig. 1 so as to overhang the hinge portion of the gate 9 and is adapted to fit snugly in engagement with the gate to constitute an air tight seal therefor.

As illustrated in Fig. 12 the bridge bars 17 are provided with centrally arranged web portions 48 having notches 49 formed therein at the outer end thereof whereby a pocket is constituted for allowing the flange 15 of 13a the inclined plate 11 to fit therein. As illustrated in Fig. 12 the lugs 19 are formed upon the bridge bars 17 to interlock with the sockets formed in the adjacent bridge bar whereby a substantially continuous bridge will be made up of the numerously closely arranged bridge bars 17 In Figs. 13 and 14 there is shown an embodiment of the bridge bar which may be used in connection with the present invention comprising a body portion 50 as having a primary jaw 51, an auxiliary jaw 52 being spaced from it for constituting a pocket to receive the flange 15 of the inclined plate 11. The body portion 50 of the bridge bar is held as indicated at 53 and is adapted to receive a brick 5% for the purpose of filling this opening. Of course, the usual cleats or lugs 56 are also formed upon the bridge bars as illustrated in Fig. 13.

Having thus described the invention what is claimed as new, is

1. In a grate of the class described, the combination with a frame, a chute plate carried by said frame and provided with a rearwardly extending flange, a plurality of closely arranged bridge-bars overhanging said flange and provided with downwardly extending flange portions at the outer ends thereof for holding saidbridge-bars against upward movement with respect to said plate, interlocking means formed upon said bridge-bars, said chute plate provided with a plurality of transversely extending tapering ribs, and said plate provided with a projecting lip upon the lower end thereof.

2. In a grate of the class described, the combination with a frame, a chute plate carried by one end of said frame, a plurality of transversely extending tapering ribs formed upon said plate and constituting a retarding means for said chute plate a reinforcing plate of hardened steel secured to the under face of said chute plate, and a dumping gate supported below said chute plate, said chute plate being provided with a projecting lip partially overhanging a portion of said dump gate.

3. In a grate of the class described, the combination with a frame, a dumping gate carried thereby, of operating bars secured to said dumping gate and extending longi-,

tudinally of said frame, said operating bars provided with upturned ends, adjusting bolts secured to said ends, operating levers, an operating rod supporting said operating levers, heads rotatably secured to the outer ends of said levers, said heads provided with apertures formed therein, said adjusting bolts passing through said apertures for permitting the adjustment of the length of movement of said operating bars, said levers provided with notched rear ends, said operating rod provided with flattened portions formed thereon, and adjusting bolts passing through said notched rear ends of said operating levers for locking said operating levers in engagement with said operating rod.

4. In a grate of the class described, the combination with a frame, a chute plate carried by one end of said frame, a plurality of ribs formed upon said plate and constituting a retarding means for said chute plate, a reinforcing chute plate, a dumping gate supported below said chute plate, and said chute plate being provided with means overhanging a portion of said dump plate.

5. In a grate of the class described, the combination with a frame, a shaft, pulleys carried by said shaft and provided with laterally extending bearing portions, one of said bearing portions of each pulley overhanging said frame for permitting the sides of said pulleys to fit snugly against the sides of said frame, and a chain grate traveling upon said pulleys and being held in close engagement with the sides of said frame.

6. In a grate of the class described, the combination with a frame, a dumping gate carried thereby, of operating bars secured to said dumping gate and extending longitudinally of said frame, adjustable means secured to the ends of said operating bars, an operating lever, an operating rod supporting said operating lever, and means connecting said operating lever with the adjustable means carried by the ends of said operating bars for permitting the free swinging of said operating levers.

7. In a grate of the class described, the combination with a frame, a dumping gate carried thereby, of operating bars secured to said dumping gate and extending longitudinally of said frame, adjustable means secured to the ends of said operating bars, an operating lever, an operating rod supporting said operating lever, means connecting said operating lever with the adjustable means carried by the ends of said operating bars for permitting the free swinging of said operating levers, a handle secured to said operating rod, a bracket provided with a bifurcated end, said handle adapted to fit in said bifurcated end, and means for closing the bifurcated end of said bracket for holding said handle in a locked position.

In testimony whereof I hereunto affix my signature in presence of two witnesses.

PAUL L. GROVVE.

Witnesses IRVING L. MoCA'rHRAN, H. B. VROOMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

